Improving Light Outcoupling Efficiency for OLEDs with Microlens Array Fabricated on Transparent Substrate

Figure 4

Schematic diagram of concise fabrication process for microlens array, (a) substrate, (b) coating photoresist, (c) photoresist pattern formed, (d) microlens array fabricated, (e) evaporating organic device with the microlens array substrate, (f) surface morphology of the microlens array.